Kalrez® – The Ultimate FFKM Sealing Material for Extreme Environments

Introduction

In industries that demand the highest levels of safety, precision, and reliability — such as chemical processing, oil & gas, semiconductors, pharmaceuticals, and aerospace — choosing the right sealing material is crucial to ensure equipment performance and longevity.

Conventional rubber seals often degrade quickly when exposed to aggressive chemicals, high temperatures, or extreme pressures.
Kalrez®, a perfluoroelastomer (FFKM) developed exclusively by DuPont, represents a breakthrough solution — delivering superior sealing performance, exceptional durability, and long-term stability in the harshest operating conditions.

What is Kalrez®?

Kalrez® is a fully fluorinated perfluoroelastomer (FFKM) that combines the outstanding chemical resistance of PTFE (Teflon®) with the flexibility and elasticity of rubber.
This unique composition allows Kalrez® seals and O-rings to perform reliably under extreme chemical and thermal environments, where conventional materials would fail.

Key Features of Kalrez®

🔹 Exceptional Chemical Resistance – Withstands exposure to over 1,800 chemicals, including strong acids, bases, and solvents.
🔹 High-Temperature Stability – Operates continuously at temperatures up to 327°C, ideal for reactors, heat exchangers, and steam environments.
🔹 Low Compression Set & High Elasticity – Maintains sealing integrity over long periods, reducing leakage and maintenance costs.
🔹 Ultra-High Purity – Designed to minimize particle generation and contamination, meeting the stringent requirements of semiconductor and pharmaceutical industries.
🔹 Extended Service Life – Reduces downtime and optimizes total cost of ownership (TCO).
🔹 Flexible Customization – Available in standard O-rings, flat gaskets, and custom-engineered shapes for specialized applications.

Popular Kalrez® Product Grades

Applications of Kalrez® Across Industries

• Chemical Processing: Seals and gaskets for pumps, valves, and reactors exposed to corrosive chemicals.

• Oil & Gas: Sealing solutions for drilling systems, gas processing, and high-temperature, high-pressure operations.

• Semiconductors: Plasma chamber seals, vacuum systems, and ultra-pure process environments.

• Pharmaceutical & Biotechnology: Gaskets and O-rings for bioreactors, sterilization systems, and CIP/SIP equipment.

• Aerospace & Energy: Seals for engines, hydraulic systems, and turbines operating under extreme conditions.

Why Choose Kalrez® from Filterfine Vietnam

As the official authorized distributor of DuPont™ Kalrez® in Vietnam,
Filterfine Vietnam is committed to delivering:

✅ Genuine Kalrez® products with full CO-CQ certification
✅ Expert technical consultation tailored to specific applications
✅ Optimized sealing solutions that extend equipment life and reduce operational costs

Conclusion

Kalrez® FFKM is more than just a sealing material — it’s the industry benchmark for reliability and performance in the most demanding environments.

If your business aims to extend equipment lifespan, optimize process efficiency, and minimize operational risks,
partner with Filterfine Vietnam and DuPont™ Kalrez® — your trusted solution for high-performance sealing in extreme conditions.